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United States Postal Service Email Lists & Mailing Lists

by Alice Scott · Updated Mar 23, 2026 ✓ Verified Data

Connect with businesses and professionals in the United States Postal Service industry using our high-quality mailing lists and email lists—trusted by marketers nationwide. SIC Code 43 covers all segments of the USPS, enabling you to reach key personnel involved in mail delivery, distribution, and support services. Our up-to-date, NCOA-verified data ensures over 98% accuracy, making it easy to target decision-makers and influencers within this vital federal service, perfect for your direct mail campaigns or B2B outreach.

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About United States Postal Service Email Lists & Mailing Lists

United States Postal Service Email Lists & Mailing Lists are business marketing lists that include important contact information for key decision makers at United States Postal Service across the country. These high quality b2b marketing lists help you quickly connect with your target audience, so you can spend more time selling your products and services, and growing your business.

About SIC Code 43 - United States Postal Service

SIC Code 43, designated for the United States Postal Service, includes establishments that provide mail delivery and related postal services under the authority of the federal government. This classification covers all operations managed by the U.S. Postal Service, including the collection, sorting, transportation, and delivery of letters, parcels, and packages throughout the country. The scope of this code encompasses official postal facilities and activities, excluding private courier and delivery services, which fall under different classifications. Services under SIC Code 43 ensure the secure and systematic handling of mail and contribute significantly to the nation’s communication and logistics infrastructure.

Information Included in your List

Your United States Postal Service mailing list includes:

Employee Contact's First & Last Name (if available)Employee's TitleBusiness NameBusiness Postal Mailing AddressCityStateZip codeBusiness Telephone NumberSIC CodeSIC Description

You can choose to add additional information, if needed. For example:

Business URL / WebsiteWoman OwnedSmall BusinessHome OfficeAnnual Sales VolumeYears in BusinessNumber of EmployeesLocation Type: Headquarter, Branch, SinglePublic / Private OwnershipFranchise / Not a FranchiseChain / Not a ChainEmail Address (where available)

Quantity of Leads Available

For the latest count of available leads for SIC code 43 – United States Postal Service, use our live count tool. Counts update in real time and always reflect our most recent data refresh.

How our Business Lists are Compiled: Where the Data comes From

Our business data is compiled from hundreds of public and proprietary sources including federal, state, and local filings, business directories, Secretary of State records, utility connections, and regular direct telephone verification. Records are updated monthly to ensure deliverability.

Deliverability & Accuracy: What to Expect

We guarantee 90%+ mailing address deliverability on all business lists. All addresses are USPS CASS-certified and NCOA-processed. Email addresses are verified and tested before delivery.

Why Businesses Choose LeadsPlease Lists

Why LeadsPlease

  • 98% Accuracy Guaranteed
  • Triple-verified — Automation + Human Review
  • Updated Every Week — 4x Monthly Refresh
  • NCOA Verified Addresses
  • 25 Free Leads — No Credit Card Required
  • 5 Formats: Excel, CSV, PDF, Labels, CRM Push
  • CRM Integrations: Salesforce, HubSpot, Zoho + more
  • Pay-as-you-go + Subscribe & Save (10% off)
  • Voted #1 List Broker — Business.com, 4 Years
  • GDPR + CAN-SPAM + CCPA + TCPA Compliant
  • 24/7 Phone + Live Chat Support
  • Real-Time Email Validation — ZeroBounce
  • ⭐ Google 4.8/5  ·  G2 4.6/5

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Other United States Postal Service Related Businesses

Frequently Asked Questions

SIC Code 43 is designated for the United States Postal Service (USPS) and includes all federal establishments that provide mail delivery and postal services across the country.

SIC Code 43 covers the collection, sorting, transportation, and delivery of letters, parcels, and packages by official postal facilities managed by the USPS.

No, private courier and delivery services are not covered under SIC Code 43. They are classified separately under different SIC codes.

The primary function is to ensure the secure, systematic handling and timely delivery of mail and parcels throughout the United States.

Yes, the USPS also handles international mail, but SIC Code 43 specifically classifies the domestic postal operations under federal authority.

SIC Code 43 establishments support the nation's communication and logistics infrastructure by reliably connecting individuals and businesses through mail and package delivery.

All operations under SIC Code 43 are managed by the United States Postal Service, a federal government agency.

Yes, all official USPS facilities, including post office branches and distribution centers, are classified under SIC Code 43.

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